Velleman DVM030 Bedienungsanleitung Seite 12

Note: It is normal once the small value of capacitance dose not return zero,
deduct the readings during measurement for getting the accurate value.
9.7 TRANSISTOR
Range
hFE
10. Operation
10.1 DC + AC VOLTAGE MEASUREMENT
Do not measure circuits that may contain voltages > 1000 VDC or
> 750 VAC
Use extreme caution when measuring voltages higher than 60 VDC
or 30 VAC rms.
Always place your fingers behind the protective edges of the test
probes while measuring!
1. Insert the red test lead into ""V
black test lead into "COM" jack.
2. Set the rotary switch to the voltage position (~ mV / ~ V).
3. Touch the black test probe tip to the negative side of the circuit; touch
the red test probe tip to the positive side of circuit.
4. Read the voltage in the LCD display. The polarity of red test lead
connection will be indicated when making DC Voltage measurement.
Notes
• Set the rotary switch to higher range if not known the current
range under test, and then lower down untill the best accuracy.
• To avoid electrical shock and/or damage to the instrument, do
not attempt to take any voltage measurement that might exceed
750VRMS.
• It is normal situation and no effect on measurement, once at mV
or V range, even without input or connect with test lead, meter
shows value in LCD.
• An over-range is indicated by OL or -OL. Set to a higher range.
V. 01 – 04/05/2023
DVM030
Display approx. hFE value 1~1000 of transistor
under test, base current approx. 1mA.
12
Function
hFE Hz" jack" jack and insert
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